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www" A @guitaksttzs etmrt @frn JOSHUA F; HAMMND, or -rRoviDENom RHODE 1SLAND.

' Lernsystem N0.-67,297, dmoz .my so. 1867.

IMPROVEMENT IN FLOCR'rCLAMPS To ALI; W-HOM Y1T' MAY coNoERNs 13e itknovvn that I, JOSHUA'F. HAM`MOND, of Providence, in the State of RhodeIsla-nd, have invented certuin new and useful improvements inFloor-Jaeks; 'and I do her-any declarel the following to be s full andexact description of the same, reference being had to the drawings thataiccinznpa-ny und form a. part of these specificotions, in which- FigureI is a. side elevation v Figure H sectionall view cut crosswise at thefulcrum ofthe actuating lever C.

Lott-er A,"bed piece. .Letter B, movable part, sliding book -and forthon A. Letter C, yactuating lever. Letter D, pawl, acting inconjunctionwith lever C. ',Letter E,- a. piece of steel, sharpened etits 'lowery end.

Leiter F, block fostened mi thesiirlingi-piece '.B, and .provided with's truck or wheel which revolves when acted on by the cam of. the leverC, k:md makes the machine work easily Letter G, a projection on theplate B on 'the opposite side of the lever C from F, and receives thepressure of the cam on the lever C to carry the plate B to the positionshown in Fig, I. Letter H, fulcrur'n on which the lever C turns.

The object of my invention is to provide an implement desirable to thecarpenter to aid h'im in producing close 'joints in iloors. I I

I construct the machine mostly of' common malleable iron. The staple E,however,k shouldbe of steel, and upon the top ofthe'uctuuting lever C awood handle may be placed. I

The manner of operating my'machine is :is follows: Plee the right-handend st m against the board, have the lever as in Fig. I, strike one ortwo blows on the top of the steel E to set it into the timber, thencarrylho upper end of the lever C over-to the right, and .the plate B iscarried forward, es shown by red dotted lines.

The projection G u w .y or-m'ay nothave u truck to lessen friction, thesame as F. What I claim as new, :ind desire tn secure by Letters Patent,is I clxim, in combination with the bed-pieee A, the leven-'C= the pawlD, the steelE, nd sliding-piede B,

provided with' the blocks F and G, either with or without the truck s',substantially as Adicrilre-d and for the purposes set forth. l v

JOSHUA F. HAMMOND Witnesses Issu: Pimm,

Llvxxesros

